All Outputs (40)

Electrochemical and physicochemical degradability evaluation of printed flexible carbon electrodes in seawater (2022)
Journal Article
Franco, F. F., Dervin, S., & Manjakkal, L. (2022). Electrochemical and physicochemical degradability evaluation of printed flexible carbon electrodes in seawater. Journal of Electroanalytical Chemistry, 920, Article 116592. https://doi.org/10.1016/j.jelec

The environmental impact of metals and non-degradable plastics in printed electrodes has highlighted the need of employing sustainable materials in environmental monitoring. In this work, we developed a new sustainable graphite-based paste (G-PE) pri... Read More about Electrochemical and physicochemical degradability evaluation of printed flexible carbon electrodes in seawater.

Cu2O-Based Electrochemical Biosensor for Non-Invasive and Portable Glucose Detection (2022)
Journal Article
Franco, F. F., Hogg, R. A., & Manjakkal, L. (2022). Cu2O-Based Electrochemical Biosensor for Non-Invasive and Portable Glucose Detection. Biosensors, 12(3), Article 174. https://doi.org/10.3390/bios12030174

Electrochemical voltammetric sensors are some of the most promising types of sensors for monitoring various physiological analytes due to their implementation as non-invasive and portable devices. Advantages in reduced analysis time, cost-effectivene... Read More about Cu2O-Based Electrochemical Biosensor for Non-Invasive and Portable Glucose Detection.

MnOx-Electrodeposited Fabric-Based Stretchable Supercapacitors with Intrinsic Strain Sensing (2021)
Journal Article
Pullanchiyodan, A., Manjakkal, L., Ntagios, M., & Dahiya, R. (2021). MnOx-Electrodeposited Fabric-Based Stretchable Supercapacitors with Intrinsic Strain Sensing. ACS applied materials & interfaces, 13(40), 47581-47592. https://doi.org/10.1021/acsami.1c12

The increasing number of devices needed by wearable systems to bring radical advances in healthcare, robotics, and human–machine interfaces is a threat to their growth if the integration and energy-related challenges are not managed. A natural soluti... Read More about MnOx-Electrodeposited Fabric-Based Stretchable Supercapacitors with Intrinsic Strain Sensing.

Energy Autonomous Sweat‐Based Wearable Systems (2021)
Journal Article
Manjakkal, L., Yin, L., Nathan, A., Wang, J., & Dahiya, R. (2021). Energy Autonomous Sweat‐Based Wearable Systems. Advanced materials, 33(35), Article 2100899. https://doi.org/10.1002/adma.202100899

The continuous operation of wearable electronics demands reliable sources of energy, currently met through Li-ion batteries and various energy harvesters. These solutions are being used out of necessity despite potential safety issues and unsustainab... Read More about Energy Autonomous Sweat‐Based Wearable Systems.

Connected Sensors, Innovative Sensor Deployment, and Intelligent Data Analysis for Online Water Quality Monitoring (2021)
Journal Article
Manjakkal, L., Mitra, S., Petillot, Y. R., Shutler, J., Scott, E. M., Willander, M., & Dahiya, R. (2021). Connected Sensors, Innovative Sensor Deployment, and Intelligent Data Analysis for Online Water Quality Monitoring. IEEE Internet of Things, 8(18), 1

The sensor technology for water quality monitoring (WQM) has improved during recent years. The cost-effective sensorised tools that can autonomously measure the essential physical-chemical-biological (PCB) variables are now readily available and are... Read More about Connected Sensors, Innovative Sensor Deployment, and Intelligent Data Analysis for Online Water Quality Monitoring.

Metal Coated Fabric Based Asymmetric Supercapacitor for Wearable Applications (2021)
Journal Article
Pullanchiyodan, A., Manjakkal, L., & Dahiya, R. (2021). Metal Coated Fabric Based Asymmetric Supercapacitor for Wearable Applications. IEEE Sensors Journal, 21(23), 26208-26214. https://doi.org/10.1109/jsen.2021.3058894

This paper presents a fabric based asymmetric supercapacitor (ASC) with metal coated cloths as the electrode and the current collector. Graphite paste printed on silver coated textile (Berlin) is used as the negative electrode and nickel/copper/silve... Read More about Metal Coated Fabric Based Asymmetric Supercapacitor for Wearable Applications.

Natural Jute Fibre‐Based Supercapacitors and Sensors for Eco‐Friendly Energy Autonomous Systems (2021)
Journal Article
Manjakkal, L., Franco, F. F., Pullanchiyodan, A., González‐Jiménez, M., & Dahiya, R. (2021). Natural Jute Fibre‐Based Supercapacitors and Sensors for Eco‐Friendly Energy Autonomous Systems. Advanced Sustainable Systems, 5(3), Article 2000286. http

Environmentally friendly energy devices and systems are of increasing interest for the circular economy and sustainable information and communications technology. To this end, an energy-autonomous system comprised of natural jute fiber-based supercap... Read More about Natural Jute Fibre‐Based Supercapacitors and Sensors for Eco‐Friendly Energy Autonomous Systems.

Ultrathin Ion-Sensitive Field-Effect Transistor Chips with Bending-Induced Performance Enhancement (2020)
Journal Article
Vilouras, A., Christou, A., Manjakkal, L., & Dahiya, R. (2020). Ultrathin Ion-Sensitive Field-Effect Transistor Chips with Bending-Induced Performance Enhancement. ACS Applied Electronic Materials, 2(8), 2601-2610. https://doi.org/10.1021/acsaelm.0c00489

Flexible multifunctional sensors on skin or wearables are considered highly suitable for next-generation noninvasive health care devices. In this regard, the field-effect transistor (FET)-based chemical sensors such as ion-sensitive FETs (ISFETs) are... Read More about Ultrathin Ion-Sensitive Field-Effect Transistor Chips with Bending-Induced Performance Enhancement.

A Wearable Supercapacitor Based on Conductive PEDOT:PSS‐Coated Cloth and a Sweat Electrolyte (2020)
Journal Article
Manjakkal, L., Pullanchiyodan, A., Yogeswaran, N., Hosseini, E. S., & Dahiya, R. (2020). A Wearable Supercapacitor Based on Conductive PEDOT:PSS‐Coated Cloth and a Sweat Electrolyte. Advanced materials, 32(24), Article 1907254. https://doi.org/10.1002/a

A sweat-based flexible supercapacitor (SC) for self-powered smart textiles and wearable systems is presented. The developed SC uses sweat as the electrolyte and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as the active electro... Read More about A Wearable Supercapacitor Based on Conductive PEDOT:PSS‐Coated Cloth and a Sweat Electrolyte.

Metal Coated Conductive Fabrics with Graphite Electrodes and Biocompatible Gel Electrolyte for Wearable Supercapacitors (2020)
Journal Article
Pullanchiyodan, A., Manjakkal, L., Dervin, S., Shakthivel, D., & Dahiya, R. (2020). Metal Coated Conductive Fabrics with Graphite Electrodes and Biocompatible Gel Electrolyte for Wearable Supercapacitors. Advanced Materials Technologies, 5(5), Article 190

Fabric-based supercapacitors have received considerable interest as energy storage devices for wearable systems. This work demonstrates the use of metal coated fabrics as the active material and current collector with nontoxic polyvinyl alcohol (PVA)... Read More about Metal Coated Conductive Fabrics with Graphite Electrodes and Biocompatible Gel Electrolyte for Wearable Supercapacitors.

Flexible potentiometric pH sensors for wearable systems (2020)
Journal Article
Manjakkal, L., Dervin, S., & Dahiya, R. (2020). Flexible potentiometric pH sensors for wearable systems. RSC Advances, 10(15), 8594-8617. https://doi.org/10.1039/d0ra00016g

There is a growing demand for developing wearable sensors that can non-invasively detect the signs of chronic diseases early on to possibly enable self-health management. Among these the flexible and stretchable electrochemical pH sensors are particu... Read More about Flexible potentiometric pH sensors for wearable systems.

Flexible Iridium Oxide Based pH Sensor Integrated With Inductively Coupled Wireless Transmission System for Wearable Applications (2020)
Journal Article
Marsh, P., Manjakkal, L., Yang, X., Huerta, M., Le, T., Thiel, L., …Dahiya, R. (2020). Flexible Iridium Oxide Based pH Sensor Integrated With Inductively Coupled Wireless Transmission System for Wearable Applications. IEEE Sensors Journal, 20(10), 5130-

This work presents a pH sensor platform combining the high performance of iridium oxide (IrOx) fabricated by cyclic voltammetry with inductively-coupled wireless (ICW) transmission. Data included presents flexible potentiometric pH sensors having IrO... Read More about Flexible Iridium Oxide Based pH Sensor Integrated With Inductively Coupled Wireless Transmission System for Wearable Applications.

Metal oxides based electrochemical pH sensors: Current progress and future perspectives (2019)
Journal Article
Manjakkal, L., Szwagierczak, D., & Dahiya, R. (2020). Metal oxides based electrochemical pH sensors: Current progress and future perspectives. Progress in Materials Science, 109, Article 100635. https://doi.org/10.1016/j.pmatsci.2019.100635

Electrochemical pH sensors are on high demand in numerous applications such as food processing, health monitoring, agriculture and nuclear sectors, and water quality monitoring etc., owing to their fast response (

Large-Area Soft e-Skin: The Challenges Beyond Sensor Designs (2019)
Journal Article
Dahiya, R., Yogeswaran, N., Liu, F., Manjakkal, L., Burdet, E., Hayward, V., & Jorntell, H. (2019). Large-Area Soft e-Skin: The Challenges Beyond Sensor Designs. Proceedings of the IEEE, 107(10), 2016-2033. https://doi.org/10.1109/jproc.2019.2941366

Sensory feedback from touch is critical for many tasks carried out by robots and humans, such as grasping objects or identifying materials. Electronic skin (e-skin) is a crucial technology for these purposes. Artificial tactile skin that can play the... Read More about Large-Area Soft e-Skin: The Challenges Beyond Sensor Designs.

Triboelectric Nanogenerator With Enhanced Performance via an Optimized Low Permittivity Substrate (2019)
Journal Article
Min, G., Manjakkal, L., Mulvihill, D. M., & Dahiya, R. S. (2020). Triboelectric Nanogenerator With Enhanced Performance via an Optimized Low Permittivity Substrate. IEEE Sensors Journal, 20(13), 6856-6862. https://doi.org/10.1109/jsen.2019.2938605

With electrical power generated from mechanical contact, triboelectric nanogenerators (TENGs) offer a promising route to realizing self-powered sensors. For effective usage, it is important to improve their limited power range (0.1–100 mW/cm 2 ) and... Read More about Triboelectric Nanogenerator With Enhanced Performance via an Optimized Low Permittivity Substrate.

Graphene–Graphite Polyurethane Composite Based High‐Energy Density Flexible Supercapacitors (2019)
Journal Article
Manjakkal, L., Navaraj, W. T., Núñez, C. G., & Dahiya, R. (2019). Graphene–Graphite Polyurethane Composite Based High‐Energy Density Flexible Supercapacitors. Advanced Science, 6(7), Article 1802251. https://doi.org/10.1002/advs.201802251

Energy autonomy is critical for wearable and portable systems and to this end storage devices with high-energy density are needed. This work presents high-energy density flexible supercapacitors (SCs), showing three times the energy density than simi... Read More about Graphene–Graphite Polyurethane Composite Based High‐Energy Density Flexible Supercapacitors.

Textile-Based Potentiometric Electrochemical pH Sensor for Wearable Applications (2019)
Journal Article
Manjakkal, L., Dang, W., Yogeswaran, N., & Dahiya, R. (2019). Textile-Based Potentiometric Electrochemical pH Sensor for Wearable Applications. Biosensors, 9(1), Article 14. https://doi.org/10.3390/bios9010014

In this work, we present a potentiometric pH sensor on textile substrate for wearable applications. The sensitive (thick film graphite composite) and reference electrodes (Ag/AgCl) are printed on cellulose-polyester blend cloth. An excellent adhesion... Read More about Textile-Based Potentiometric Electrochemical pH Sensor for Wearable Applications.

Energy autonomous electronic skin (2019)
Journal Article
García Núñez, C., Manjakkal, L., & Dahiya, R. (2019). Energy autonomous electronic skin. npj Flexible Electronics, 3(1), Article 1. https://doi.org/10.1038/s41528-018-0045-x

Energy autonomy is key to the next generation portable and wearable systems for several applications. Among these, the electronic-skin or e-skin is currently a matter of intensive investigations due to its wider applicability in areas, ranging from r... Read More about Energy autonomous electronic skin.

Cost-effective sensors and sensor nodes for monitoring environmental parameters (2018)
Journal Article
Vasiljevic, D., Zlebic, C., Stojanovic, G., Simic, M., Manjakkal, L., & Stamenkovic, Z. (2018). Cost-effective sensors and sensor nodes for monitoring environmental parameters. Facta Universitatis, Series: Mechanical Engineering, 31(1), 11-23. https://doi

This paper reviews the design and characterization of humidity and pH sensors manufactured in the printed circuit board (PCB), ink-jet, and screen printing technologies. The first one (PCB technology) provides robust sensors with PET film which can b... Read More about Cost-effective sensors and sensor nodes for monitoring environmental parameters.

Flexible Printed Reference Electrodes for Electrochemical Applications (2018)
Journal Article
Manjakkal, L., Shakthivel, D., & Dahiya, R. (2018). Flexible Printed Reference Electrodes for Electrochemical Applications. Advanced Materials Technologies, 3(12), Article 1800252. https://doi.org/10.1002/admt.201800252

This work presents screen-printed thick film reference electrodes (REs) on a polyethylene terephthalate substrate. The ion-conducting channel of presented screen-printed thick film Ag|AgCl|KCl electrodes are made from a composite of glass–KCl powder.... Read More about Flexible Printed Reference Electrodes for Electrochemical Applications.